inp = int(input())
if inp>=400 and inp<=599:
  ans = 8
elif inp>=600 and inp<=799:
  ans = 7
elif inp>=800 and inp<=999:
  ans = 6
elif inp>=1000 and inp<=1199:
  ans = 5
elif inp>=1200 and inp<=1399:
  ans = 4
elif inp>=1400 and inp<=1599:
  ans = 3
elif inp>=1600 and inp<=1799:
  ans = 2
elif inp>=1800 and inp<=1999:
  ans = 1
print(ans) inp = int(input()) inp int(input()) int input() input if inp>=400 and inp<=599:
  ans = 8
elif inp>=600 and inp<=799:
  ans = 7
elif inp>=800 and inp<=999:
  ans = 6
elif inp>=1000 and inp<=1199:
  ans = 5
elif inp>=1200 and inp<=1399:
  ans = 4
elif inp>=1400 and inp<=1599:
  ans = 3
elif inp>=1600 and inp<=1799:
  ans = 2
elif inp>=1800 and inp<=1999:
  ans = 1 inp>=400 and inp<=599 inp>=400 inp 400 inp<=599 inp 599 ans = 8 ans 8 elif inp>=600 and inp<=799:
  ans = 7 inp>=600 and inp<=799 inp>=600 inp 600 inp<=799 inp 799 ans = 7 ans 7 elif inp>=800 and inp<=999:
  ans = 6 inp>=800 and inp<=999 inp>=800 inp 800 inp<=999 inp 999 ans = 6 ans 6 elif inp>=1000 and inp<=1199:
  ans = 5 inp>=1000 and inp<=1199 inp>=1000 inp 1000 inp<=1199 inp 1199 ans = 5 ans 5 elif inp>=1200 and inp<=1399:
  ans = 4 inp>=1200 and inp<=1399 inp>=1200 inp 1200 inp<=1399 inp 1399 ans = 4 ans 4 elif inp>=1400 and inp<=1599:
  ans = 3 inp>=1400 and inp<=1599 inp>=1400 inp 1400 inp<=1599 inp 1599 ans = 3 ans 3 elif inp>=1600 and inp<=1799:
  ans = 2 inp>=1600 and inp<=1799 inp>=1600 inp 1600 inp<=1799 inp 1799 ans = 2 ans 2 elif inp>=1800 and inp<=1999:
  ans = 1 inp>=1800 and inp<=1999 inp>=1800 inp 1800 inp<=1999 inp 1999 ans = 1 ans 1 print(ans) print ans ans = 2 2 ans ans = 5 5 ans ans = 1 1 ans ans = 6 6 ans ans = 8 8 ans inp = int(input()) int(input()) inp ans = 4 4 ans ans = 3 3 ans ans = 7 7 ans
inp = int(input())
if inp>=400 and inp<=599:
  ans = 8
elif inp>=600 and inp<=799:
  ans = 7
elif inp>=800 and inp<=999:
  ans = 6
elif inp>=1000 and inp<=1199:
  ans = 5
elif inp>=1200 and inp<=1399:
  ans = 4
elif inp>=1400 and inp<=1599:
  ans = 3
elif inp>=1600 and inp<=1799:
  ans = 2
elif inp>=1800 and inp<=1999:
  ans = 1
print(ans)